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1	Chameleon metals : sub-wavelength metallic meshes Coyle, Steven January 2004 (has links) No description available. 546.31
2	Contemporary metal carbonyl Peplow, Mark Andrew January 1998 (has links) No description available. 546.31
3	Schlenk dimerisation of phosphorous-substituted alkenes Tyson, Brent Vickers January 2004 (has links) No description available. 546.31
4	Asymmetric complexes for phospho-aldol (PA) catalysis Davis, Amber Verity January 2005 (has links) No description available. 546.31
5	New inorganic frameworks containing asymmetric oxyanions Johnston, Magnus G. January 2003 (has links) This thesis describes the hydrothermal synthesis and structural characterisation of twenty-seven new inorganic frameworks based upon the asymmetric oxyanions of selenium(IV) and tellurium(IV). Of particular interest is how the lone pair of electrons that both these species possess, are locally contained within each structure, and the effect this has on the global topology. <i>Selenites</i>: The Ba<i>M</i><sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub><sup>.</sup><i>n</i>H<sub>2</sub>O (<i>M</i> = Co, Ni, Mn, Mg;<i>n</i> = 3) family of phases, and Hg<sub>2</sub>O(SeO<sub>3</sub>)<sup>.</sup>0.5H<sub>2</sub>O both contain one-dimensional hexagonal channels into which the Se(IV) lone pairs are orientated, which appear to hinder the movement of the extra-framework cations and water molecules. Ion exchange experiments carried upon BaCo<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub><sup>.</sup>3H<sub>2</sub>O with LiCl<sub>2</sub> resulted in the new phase, Ba<sub>2</sub>CoCl<sub>2</sub>(SeO<sub>3</sub>)<sub>2</sub>. Edge-sharing between SeO<sub>3</sub> and <i>M</i>O<sub>6</sub> groups in Sr<i>M</i>(SeO<sub>3</sub>)<sub>2</sub> (<i>M = </i>Zn and Mn) results in novel ZnO<sub>4+2</sub>s bicapped tetrahedra and highly distorted MnO<sub>5+1 </sub>octahedra, respectively, whilst Sc<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub><sup>.</sup>H<sub>2</sub>O contains novel ScO<sub>7</sub> pentagonal bipyramids and ScO<sub>6+1</sub> monocapped octahedra. Mn<sub>3</sub>(SeO<sub>3</sub>)<sub>3</sub><sup>.</sup>H<sub>2</sub>O, Mn<sub>4</sub>(SeO<sub>3</sub>)<sub>4</sub><sup>.</sup>3H<sub>2</sub>O, Ba<sub>2</sub>Mn<sub>3</sub>(SeO<sub>3</sub>)<sub>6</sub>, PbFe<sub>2</sub>(SeO<sub>3</sub>)<sub>4</sub>, LiCd<sub>2</sub>(SeO<sub>3</sub>)<sub>2</sub>(OH) and Hg<sub>2</sub>SeO<sub>3</sub> all posses “empty” channels occupied by the Se(IV) lone pair electrons. <i>Tellurites: </i>BaTe<sub>3</sub>O<sub>7</sub> and BaTe<sub>4</sub>O<sub>9</sub> demonstrate a novel self-containment effect whereby the Te(IV) lone pairs are contained within “empty” 6- and 8-ring (6 and 8 Te nodes) tellurite tubes, respectively. In contrast, the lone pairs in the condensed phases <i>M</i>Te<sub>6</sub>O<sub>13</sub> (<i>M = </i>Mn, Co, Ni), are contained within isolated closed cavities. In the mixed valence vanadium selenite (V<sup>IV</sup>O<sub>2</sub>)(V<sup>V</sup>O<sub>2</sub>)(TeO<sub>3</sub>)<sup>.</sup>NH<sub>4</sub> the anionic [(V<sup>IV</sup>O<sub>2</sub>)(V<sup>V</sup>O<sub>2</sub>)(TeO<sub>3</sub>)]<sup>-</sup> layers are bridged by ammonium cations and the Te(IV) lone pairs are unusually orientated into the layers, confined in small [011] tunnels. There are no interstitial cations bridging the neutral layers in Li(VO<sub>2</sub>)<sub>3</sub>(TeO<sub>3</sub>)<sub>2</sub> and a series of very long Te<sup>...</sup>O and Li<sup>...</sup>O interactions appear to bind the structure. 546.31
6	New reactions of metal-alkyne complexes Davoile, Ryan J. January 2003 (has links) This thesis describes the use of bimetallic alkyne complexes for use in variants of the Nicholas reaction. The heterobimetallic core provides a source of chiral control unlike previous protocols reported in the literature, as stereocontrol arises from the inherently chiral cobalt-molybdenum core of these complexes and not from an external source. The inherently chiral heterobimetallic complexes were utilised as efficient chiral auxiliaries for nucleophilic additions to both propargylic alkene and Nicholas salt complexes with a degree of stereocontrol also extending to intramolecular addition. 1,3-Dipolar cycioaddition to homo bimetallic and heterobimetallic enyne complexes to obtain isoxazoline ring systems was investigated, following a report in the literature. A novel homobimetallic 1,3-dipole was synthesised on opening of a cyclopropane, subsequel1tly trapping with a series of aldehyde and imines to efficiently form tetrahydrofuran and pyrrolidine ring structures. Chapter 1: An overview of developments of homobimetallic alkyne complexes in the Nicholas reaction as reported in the literature. Chapter 2: Highlights our research into the use of bimetallic alkyne complexes for use in organic synthesis. Chapter 3: Provides experimental data for our studies. 546.31
7	Πλειάδες του Μn σε ενδιάμεσες οξειδωτικές βαθμίδες με οξιμάτο και καρβοξυλάτο υποκατάστατες: σύνθεση, χαρακτηρισμός και μαγνητικές ιδιότητες Μήλιος, Κωνσταντίνος Ι. 02 August 2010 (has links) - / - Μέταλλα Ανάλυση Χημεία, Αναλυτική 546.31 Metals Analysis Chemistry, Analytical
8	Χημεία, οπτικές και μαγνητικές ιδιότητες ετερομεταλλικών 3d/4f- μεταλλικών πλειάδων Πολύζου, Χριστίνα 19 July 2012 (has links) Τα ετερομεταλλικά σύμπλοκα μεταβατικών μετάλλων-λανθανιδίων (Ln) έχουν μεγάλη σημασία εξαιτίας των σημαντικών φυσικών (μαγνητικών και οπτικών) ιδιοτήτων τους. Μόνο λίγες πλειάδες ΝiII/LnIII και πολυμερή ένταξης έχουν αναφερθεί μέχρι σήμερα. Δύο γενικές προσεγγίσεις για τη σύνθεση συμπλόκων ΝiII/LnIII είναι: η στρατηγική που βασίζεται στη χρησιμοποίηση «μεταλλικών συμπλόκων ως υποκαταστατών» και η στρατηγική που βασίζεται στην «απλή ανάμιξη των συστατικών». Στην παρούσα Διπλωματική Εργασία εφαρμόζεται η δεύτερη κατά σειρά προσέγγιση για την παρασκευή των ακόλουθων ετερομεταλλικών συμπλόκων: [Ni8Tb8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (1.xMeOH.yH2O) [Ni8Ηο8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (2.xMeOH.yH2O) [Ni8Υ8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (3.xMeOH.yH2O) [Ni8Eu8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (4.xMeOH.yH2O) [Ni8Sm8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (5.xMeOH.yH2O) [Ni8Gd8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (6.xMeOH.yH2O) [Ni4Er4(OH)2(Pao)14(PaoH)2](ClO4)4.4MeOH.2H2O (7.4MeOH.2H2O) [Ni4Yb4(OH)2(Pao)14(PaoH)2](ClO4)4.4MeOH.2H2O (8.4MeOH.2H2O) [NiDy(OH)2(Phpao)3(NO3)2(MeOH)].xMeOH (9.xMeOH) {[NiDy(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (10.xMeOH.yH2O) {[NiCe(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (11.xMeOH.yH2O) {[NiPr(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (12.xMeOH.yH2O) {[NiNd(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (13.xMeOH.yH2O) {[NiSm(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (14.xMeOH.yH2O) {[NiEu(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (15.xMeOH.yH2O) {[NiTb(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (16.xMeOH.yH2O) {[NiHo(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (17.xMeOH.yH2O) {[NiEr(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (18.xMeOH.yH2O) {[NiGd(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (19.xMeOH.yH2O) όπου PaoH = 2-πυριδυλοαλδοξίμη, MepaoH = μέθυλο 2-πυριδυλοκετονοξίμη και PhpaoH = φαίνυλο 2-πυριδυλοκετονοξίμη. Οι μοριακές και κρυσταλλικές δομές των συμπλόκων προσδιορίστηκαν με κρυσταλλογραφία ακτίνων-Χ επί μονοκρυστάλλου. Eπίσης μελετήθηκαν οι μαγνητικές και οι οπτικές ιδιότητες επιλεγμένων συμπλόκων. / Heterometallic transition metal-lanthanide (Ln) complexes are of great importance because of their interesting physical (magnetic and optical) properties. Only few ΝiII/LnIII clusters and coordination polymers have been reported to date. Two general approaches for the synthesis of ΝiII/LnIII complexes are: the «metal complexes as ligands» strategy and the «one pot procedure» strategy. Here, the second approach has been applied for the preparation of the following complexes: [Ni8Tb8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (1.xMeOH.yH2O) [Ni8Ηο8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (2.xMeOH.yH2O) [Ni8Υ8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (3.xMeOH.yH2O) [Ni8Eu8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (4.xMeOH.yH2O) [Ni8Sm8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (5.xMeOH.yH2O) [Ni8Gd8O(OH)4(Pao)28](ClO4)5(NO3).xMeOH.yH2O (6.xMeOH.yH2O) [Ni4Er4(OH)2(Pao)14(PaoH)2](ClO4)4.4MeOH.2H2O (7.4MeOH.2H2O) [Ni4Yb4(OH)2(Pao)14(PaoH)2](ClO4)4.4MeOH.2H2O (8.4MeOH.2H2O) [NiDy(OH)2(Phpao)3(NO3)2(MeOH)].xMeOH (9.xMeOH) {[NiDy(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (10.xMeOH.yH2O) {[NiCe(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (11.xMeOH.yH2O) {[NiPr(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (12.xMeOH.yH2O) {[NiNd(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (13.xMeOH.yH2O) {[NiSm(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (14.xMeOH.yH2O) {[NiEu(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (15.xMeOH.yH2O) {[NiTb(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (16.xMeOH.yH2O) {[NiHo(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (17.xMeOH.yH2O) {[NiEr(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (18.xMeOH.yH2O) {[NiGd(Mepao)3(MepaoH)3](ClO4)2}2.xMeOH.yH2O (19.xMeOH.yH2O) where PaoH = 2-pyridylaldoxime, MepaoH = methyl 2-pyridylketoxime and PhpaoH = phenyl 2-pyridylketoxime. The molecular and crystal structures of the complexes have been determined by single-crystal X-ray crystallography. The magnetic and optical properties of selected complexes have also been studied. Λανθανίδια(III) Μαγνητικές ιδιότητες Νικέλιο(ΙΙ) 546.31 Heterometallic clusters Lanthanides(III) Magnetic properties Nickel(II) Single crystal X-ray crystallography

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